login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A028351 Dimension of invariant subspace of Lie polynomials of degree 2n under action of SL_2(C) on free Lie algebra of rank 2. 0
1, 0, 1, 1, 5, 9, 33, 85, 276, 827, 2693, 8626, 28639, 95393, 323367, 1104525, 3813797, 13266366, 46509357, 164098390 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

REFERENCES

M. Bremner, Lie invariants of degree ten, Int. J. Math. Game Theory Algebra, 8 (1998), no. 2-3, 115-122.

LINKS

Table of n, a(n) for n=1..20.

FORMULA

Formula in C. Reutenauer, Free Lie Algebras, pages 206-208.

CROSSREFS

Sequence in context: A270454 A323150 A116390 * A211952 A098640 A239546

Adjacent sequences:  A028348 A028349 A028350 * A028352 A028353 A028354

KEYWORD

nonn

AUTHOR

Murray R. Bremner

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)